采用EDTA-柠檬酸盐法合成Bi2V0.9Co0.1O5.5-δ超细粉体,采用TG-DSC、XRD、SEM等测试方法对粉体的合成过程、晶体结构和颗粒形态进行了表征.研究结果表明,经450℃热处理可以得到具有单一Aurivillus结构的超细粉体(约为200nm).在620℃下烧结3h可制备出致密的陶瓷样品,陶瓷样品的平均晶粒粒径约为3μm,相对密度达到94.5%.采用交流阻抗谱法研究了Bi2V0.9Co0.1O5.5-δ陶瓷的氧离子导电性能,发现在600℃时Bi2V0.9Co0.1O5.5-δ陶瓷的氧离子电导率达1.0×10-1S·cm-1.
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